Unicode C++

Check if a MIME Entity is Encrypted (S/MIME)

Demonstrates the Chilkat Mime.IsEncrypted method, which returns whether the entity is a CMS/PKCS #7 encrypted S/MIME wrapper. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: This tells you a message is encrypted and must be decrypted before its real content is available — the trigger for supplying a recipient certificate and private key to Decrypt. Reading the body without decrypting first would just yield the opaque PKCS #7 blob.

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Unicode C++

#include <CkMimeW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the Mime.IsEncrypted method, which returns whether the entity is a CMS/PKCS #7 encrypted S/MIME wrapper.  It takes no arguments.

    CkMimeW mime;
    success = mime.LoadMimeFile(L"qa_data/encrypted.eml");
    if (success == false) {
        wprintf(L"%s\n",mime.lastErrorText());
        return;
    }

    if (mime.IsEncrypted()) {
        wprintf(L"This is an encrypted S/MIME message.\n");
    }
    else {
        wprintf(L"This is not an encrypted S/MIME message.\n");
    }
    }